20996228

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{3433}}^1$

素因数の和:3587

約数の個数: 24

約数和(自身を含む): 40383840

約数和(自身を除く): 19387612

約数列:

[1, 2, 4, 11, 22, 44, 139, 278, 556, 1529, 3058, 3433, 6116, 6866, 13732, 37763, 75526, 151052, 477187, 954374, 1908748, 5249057, 10498114, 20996228]

約数ペア:

[(1, 20996228), (2, 10498114), (4, 5249057), (11, 1908748), (22, 954374), (44, 477187), (139, 151052), (278, 75526), (556, 37763), (1529, 13732), (3058, 6866), (3433, 6116)]